Combination presser foot and thread cut-off



Jan. 7, 1969 R. E. MILLER ET L 3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Sheet Original Filed May 28,1965 FIG. .1.

Am R

y mi m 2m m 9 0 2 N4 0 4 v w MP 1 w m .T 4 3 & R M 9 2 E0 w 2 8 0n I, o9 o 0 M V, 9 2 Z 7 6 8 6 ,4 H 7 O O W 7 1 w L Kll k XX 4 m H 7 9 W o .u.6 m m w w J MW T M 9 4 m w w w w W a 6 Jan. 7, 1969 R. E. MILLER ET v3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Sheet Original Filed May 28,1965 INVENTOR5 Roy E. M/LLEE MD ROBERT F. MILLER #2; {JZZI 47TOE VEYS.

Jan. 7, 1969 R. E. MILLER ET AL 3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Original Filed May 28, 1965Sheet 3 of 6 L I I INVENTORS 20v E MILL E2, AND ROBERT F. MILLER ATTOe/VEYa Jan. 7, 1969 MILLER ET AL 3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Original Filed May 28, 1965Sheet 4 of 6 L 44 2 /39 //9 ,/34

/30 /29 /50 l j K M ml: -::o /7

HT 814KB Exunusf Dmue 60 1o .-J l- .4 I- l ,4 r r R N Gum! INVENTORJ Q0)5. M/LLEe AND ROBERT F. MILLER Jan. 7, 1969 MILLER ETAL 3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Sheet .Q of 6 Original FiledMay 28, 1965 FIG. .11.

FIG. 12.

Jan. 7, 1969 MlLLER ET AL 3,420,199

COMBINATION PRESSER FOOT AND THREAD CUT-OFF Original Filed May 28, 1965Sheet Q of (i F I q @5- /95 FIG. 16. /5

INVENTORS POV .5 M/LL 2 ,q/vb

BY ROBERT F. MIL rf ATTOe/V YJ'.

United States Patent 3,420,199 COMBINATION PRESSER F001 AND THREADCUT-OFF Roy E. Miller and Robert F. Miller, Mechanicsburg, Pa.,assignors, by mesne assignments, to The Reece Corporation, Waltham,Mass., a corporation of Massachusetts Original application May 28, 1965,Ser. No. 459,638, now Patent No. 3,359,931, dated Dec. 26, 1967. Dividedand this application July 11, 1967, Ser. No. 652,610 US. Cl. 112252 2Qiaims Int. Cl. Db 65/00 ABSTRACT OF THE DISGLOSURE The presentapplication is particularly concerned with a combination, presser footand thread cut-off wherein a presser foot slideably mounted on a sewingmachine includes a slot in said presser foot with a blade extendingacross said slot, a thread retainer and thread pick-up slideablypositioned in said slot and spaced from said thread retainer and acontrolled arm pivotally mounted in said thread retainer and said threadpick-up for raising and lowering the same.

The present application is a divisional application from applicantscopending application Ser. No. 459,638, filed May 28, 1965, now U.S.Patent No. 3,359,931, dated Dec. 26, 1967 relative to a work controlledsystem for operating a sewing machine and associated elements.

The principal object of the invention is to provide a system controlledby the advancing of a piece of work for operating a sewing machine andassociated elements for sewing the work piece and which system will, inthe proper order, start and drive the sewing machine, lower the presserfoot and thread cut-off, sever the thread at the completion of thesewing of one work piece and introduction of a second work piece to thesewing machine, cool the needle, raise the presser foot and threadcutoff and stop the sewing machine solely through the feeding of thework piece during the sewing thereof.

It is a further important object of the invention to provide an airoperated combination clutch and brake in a unit which is quick in itsoperation, is rugged and long lasting, is relatively economical toproduce, is compact requiring a minimum amount of space, can be readilyassembled or disassembled without requiring special skill or tools andyet can be quickly and easily connected to various types of drivingmeans and out-put elements.

Further objects of the invention will be in part obvious and in partpointed out in the following detailed description of the accompanyingdrawings in which:

FIG. 1 is a side elevation of a sewing machine with the present systemand clutch associated therewith.

FIG. 2 is an enlarged detail longitudinal sectional View of the presentclutch taken on line 22 of FIG. 1.

FIG. 3 is an enlarged front view of a switching unit providing part ofthe present system.

FIG. 4 is a side elevation of said switching unit taken from the rightof FIG. 3.

FIG. 5 is atop view of said switching unit.

FIG. 6 is a front elevation of the center plate of said switching unittaken along line 66 of FIG. 4.

FIG. 6a is a rear view of said center plate.

FIG. 7 is an elevation of the back of the front piece of said switchingunit taken along line 7-7 of FIG. 4.

FIG. 8 is an elevation of the back of the back plate of said switchingunit taken along line 88 of FIG. 4.

FIG. 9 is an enlarged detail cross-sectional view taken on line 99 ofFIG. 7 and showing a portion of said switching unit and a pressurelimiting valve forming a part thereof.

FIG. 10 is a diagrammatic View of the electrical and pneumatic system ofthe present invention.

FIG. 11 is an enlarged front elevation of the presser foot and threadcut-off forming a part of the invention.

FIG. 12 is an enlarged side elevation taken to the right of FIG. 11 andshowing the sewing machine head in broken lines.

FIG. 13 is a cross-sectional view taken on line 13-13 of FIG. 12.

FIG. 14 is a cross-sectional view taken on line 1414 of FIG. 13.

FIG. 15 is a view similar to FIG. 14, but with the thread pick-up andthread retainer in their down position.

FIG. 16 is an enlarged perspective view of the thread cutter plate.

FIG. 17 is a longitudinal sectional view of the control unit.

FIG. 18 is a top view of said control unit.

FIG. 19 is an enlarged cross-sectional view taken on line 1919 of FIG.5, and;

FIG. 20 is an enlarged partial cross-sectional view taken on line 212-20of FIG. 3.

Referring now more particularly to the accompanying drawings in whichlike and corresponding parts are designated by similar referencecharacters, numeral 1 generally indicates a conventional lock stitchsewing machine, for example those employed in sewing parts of shoes suchas for example model 262 manufactured by the Singer Sewing Machine Co.,and Union Special 51200 manufactured by the Union Special Machine Co.,mounted upon a base 2 having a drive shaft pulley 3 around which extendsan endless belt 4. Thread 5 is fed to needle 6 adjacent presser foot andthread cut-01f 7 which is connected to the conventional presser foot rod8 and the presser foot lift mechanism controlled by cylinder 9 andcarried by the head of the sewing machine as will be described more indetail hereinafter.

Control unit generally indicated by 10 and individually shown in FIG. 17and 18 is mounted on base 2 and has a bar 11 pivotally mounted on oneend thereof extending across passageway 12 which passageway is connectedto tube 24.

An air tube 13 as shown in FIGS. 1, 14 and 15 is connected to saidpresser foot and thread cut-off 7 for supplying cooler air thereto.

A combination clutch and brake unit 15 is mounted beneath base 2 and isconnected to an electric motor 16. Pulley 17 of said clutch and brakeunit has belt 4 passing therearound.

A switching unit 18 is also mounted beneath base 2 and is connected to acompressed air inlet pipe 19 which is connected to a source ofcompressed air, not shown.

Tube 20 connects switching unit 18 with the clutch of said clutch andbrake unit while tube 21 connects unit 18 to the brake of unit 15. Tube22 connects unit 18 to the presser foot lowering side of cylinder 9while tube 23 connects unit 18 to the presser foot raising side ofcylinder 9.

Tube 24 connects unit 18 to control unit passage 12 and tube 25 connectsunit 18 to air tube 13.

An electrical circuit 26 connects motor 16 to a source of electricalcurrent. Lines 27 and 28 are also connected to said circuit while line28 is connected to fuse 29, switch 30 and by line 46 to pilot light 45.Line 33 connects one pole of a micro-switch 32 to line 43. Line 34 isconnected to line 27 and to one pole of solenoid 35 whose other pole isconnected to line 36 and pilot light 45. Line joins one pole of solenoid39 to line 44 and also line 37 connected to one pole of solenoid 38while the second 3 poles of said solenoids 38 and 39 are connected bylines 41 and 42 to line 33.

Micro-switch 32 is normally open and is closed by the upward movement ofa resilient diaphragm 48, see FIG. 19.

Control unit has a slotted base plate 49 adjustably mounted on base 2and includes a block 50 through which passageway 12 extends on adownward slant and through an opening in end recess 50 in which bar 11is pivotally positioned. A pin 52 extending through block 50 and bar 11pivotally connects the same. A thumb screw 53 extends through theslotted plate 49 and is in threaded engagement with base 2 foradjustably retaining plate 49 on base 2.

Switching unit 18 has three superimposed plates, front plate 53, centerplate 54 and back plate 55 held together by screws therethrough and baseplate 56 connected thereto by screws and also to base 2.

A tube 57 connects the bore 570 of solenoid 38 with opening 104 in saidfront plate. Tube 58 connects the bore 58a of solenoid 39 with opening106 of said front plate. An inlet pipe 59 connects air pipe 19 toopening 59a in back plate 55 and solenoid 35 is connected between pipes19 and 59 for controlling the air inlet and for at times exhausting airfrom pipe 59 to exhaust pipe 60.

Plates 55, 53 and 54 have a series of corresponding openings 61, 62 and63 through which screws extend for joining said plates together.

As shown in FIG. 9 plate 53 has a threaded stepped opening 64 into whichextends screw 65 having a threaded shank 66 extending through opening 67in plate 54 into nipple 68 connected to tube 23. Said nipple 68 hasbores 69, 70 and 71 with exterior threads 72 for receiving aconventional tube connector for joining tube 23 thereto. A ring 73retains ball 74 in bore 69 against spring 75 while screw 66 adjusts theposition of said ball relative to ring 73. Similarly openings 76, 78 and79 in plate 53 have screws 65a, 65b, and 65c extending therein andthrough openings 81, 83 and 84 respectively in center plate 54 intovalved nipples similar to nipple 68 for tubes 21, 22 and 20 respectivelyconnected to and through back plate 55.

Front plate 53 has opening 87 connected to screw valve 88 connected totube 25 and which opening 87 coincides with opening 86 in said centerplate.

Solenoid 39 has a center opening 89 and side opening 90 through plate 53while solenoid 38 has center opening 91 and side opening 92 through saidplate. Said openings 89, 90, 91 and 92 open into openings 93, 94, 95 and96 respectively of center plate 54.

Front plate opening 97 opens into piston 48 of said micro-switch andopening 98 of center plate 54. As shown in FIG. 19 a slanting passage 99in front plate 53 is connected by recess 100 in said center plate toopening 98. Further, passage 99 opens into opening 102 of said frontplate coinciding with opening 103 of said center plate.

Opening 104 of said front plate has tube 57 connected thereto and opensinto opening 105 of said center plate. Opening 106 of said front plateis connected to tube 58 and opens into opening 107 of said center plateand tube 113 connected to said back plate.

Rubber rings such as 108 are embedded in the front of center plate 54around the openings as indicated in the drawing. The back of said centerplate has recesses 109, 110, 111, and 112 each joining openings 83, 84,85 and 96, openings 67, 81, 86, 82 and 94, openings 95, and 107 andopenings 103, 105 and 93 respectively with each recess as well asopening 98 being surrounded by a rubber ring 108 embedded in the back ofthe center plate.

As shown in FIG. 19 front plate opening 102 has a screw 114 threaded inbore 115 for controlling the end of passage 99.

The clutch and brake unit 15 shown in detail in FIG. 2 has an annularhousing 116 with air passage 117 connected to tube 21 and annularcylinder 118 in the end face of said housing. An annular piston 119 isslideably mounted in cylinder 118 and has an annular extension 120.

A cylindrical cap 121 is fastened by bolts 122 to said housing end faceand within its bore 123 has a sealing ring 124 surrounding a ballbearing 125 with balls 126 riding on inner race 127 surrounding sleeve128 through which extends splined shaft 129 have a driven shaft 130exteriorly of the base 131 of cap 121 as a part thereof.

A roller bearing 132 embedded in base 131 rotatably supports one end ofshaft 129. Said base further has an annular cylinder 133 provided on theinner face thereof in which is slideably positioned an annular piston134 having an annular extension 135. An air passage 136 connected totube 20 extends into cylinder 133 behind said piston 134.

Sleeve 128 has a peripheral flange 137 forming an inner stop for one endof race 127 and a ring 138 in threaded engagement with said sleeveholding said race against said stop. Said sleeve further has a lateralannular flange 139 positioned between an annular plate 140 ofconventional brake lining material fixedly connected in any conventionalmanner to housing 116 and similar annular plate 141 of brake liningmaterial fixedly connected in a similar manner to an annular block 142.

A ball bearing 143 is embedded in block 142 and has end 144 of shaft 129extending therein rotatably supporting that end of said shaft. A stubshaft 145 is rotatably supported by a roller bearing 146 embedded in cap147 fixedly connected to other end face of housing 116 by bolts 148. Thebase 149 of cap 147 has a drive shaft 150 extending from motor 16rotatably mounted therethrough of which stub shaft 145 is an extension.

Cap 131 has threaded opening 151 connected to tube 113 and their exhaustopenings 60, 58 and 91 of solenoids 35, 39 and 38 respectively. Opening151 opens in the cap bore 123 for feeding exhausted air to connectedpassages 133, 152 to 161 inclusive and and to threaded opening 171 incap 147 from which the air is exhausted.

Solenoids 35, 39, 172 and 173 are conventional electrically operatedthree way solenoid air valves each with a strong spring, while solenoid38 is a conventional electrically operated three way solenoid air valvewith a relatively weak spring. Ports 60a, 57a, 58a, 178 and 179 as wellas 59b, 92, 90, 176 and 177 of said solenoids are normally open. Suchsolenoids can be solenoid air valves for example such as thosemanufactured by the Automatic Switch Company, Florham Park, N.].,catalogue Nos. GX 8314A33 and GX 8314A51.

FIG. 20 of the drawings discloses in cross section the solenoid 38 byway of an example of the aforementioned solenoids 35, 39, 172 and 173which are similar to this solenoid 38. Said solenoid has electrical coil180 connected to lines 37 and 41 with a fixed tube 181 extending intothe bore of said coil and having a bore 57a in communication with tube57. A slideable iron core 182 also extends within the bore of coil 180in line with tube 181 while a spring 182 tends to move said core fromsaid coil against cup 184 fixedly mounted in plate 53, across opening 91in said cup. Said cup further has opening 92 which is in communicationwith bore 57a in tube 181 due to a longitudinal groove 182a in the sidewall of core 182. When coil 180 is electrically energized it draws core182 against tube 181 closing bore 57a and bringing openings 91 and 92 incommunication.

A knee control micro-switch 185 is mounted upon a support for and belowtop 2. Said switch is connected by line 186 to one pole of both thecutoff solenoid valve 172 and to foot lift solenoid 173 as well as toswitch 30 by line 187 and micro-switch 32 by line 188. The other pole ofsaid solenoid valves 172 and 173 are connected by lines 187 and 34 topilot light 45. Said micro-switch 185 is normally open and when closedby the operator activates both said solenoids 172 and 173 opening port174 of solenoid 172 and closing ports 178 and 179 of both solenoids 172and 173.

Solenoid 172 has normally open port 178 in communication with tube 20and normally open port 176 in communication with the down pistonpositioning side of the cutoff cylinder 189 and normally closed port 174in communication with both tube 21 and the up piston positioning side ofsaid cutoff cylinder 189.

Solenoid 172 has normally open port 179 in communication with tube 20and normally open port 177 in communication with the down positioningside of the foot lift cylinder 9.

The presser foot and thread cutoff 7 includes the presser foot body 190which has a vertical recess 191 in which is slideably positioned thethread retainer 192 alongside of but slightly spaced from a pair ofplates 193 and 194 with hooked ends and a spacer 195 between and aifixedto the upper ends of plates 193 and 194 providing the thread pickup.Said thread retainer 192 has a side slot 196 in line with slots 197 and198 in the thread pickup plates in which .is positioned an end 199 of anarm 200 pivotally connected to said presser foot body. A curved rod 201is fixedly connected to the other end of said arm and positioned forbeing engaged by the piston rod 202 of said cutolf cylinder 189 forbeing pushed downwardly to raise the thread retainer 192 and threadpick-up plates 193 and 194 into the presser foot body. A coil spring 203is attached at one end to said presser foot body and bears against saidcurved rod to raise the same and thus lower the thread retainer andthread pick-up from said presser foot body. A thread cutting plate 204extends between the plates of said thread pick-up and across saidpresser foot body. A plate 205 encloses said elements within saidpresser foot body while a holder 206 fastened to said plate 205 retainssaid knife plate in position Within said presser foot body.

An L-shaped plate 207 supports cylinder 189 by bolts 209 and said plateis fastened to the end 208 of the sewing machine 1 by screws 210. AnL-shaped arm 211 is fixedly connected to plate 207 and extendsdownwardly therefrom and has a pin 212 upon which is pivotally mounted adog 213 which is held against base 2 by spring 214.

An arm 215 rotatably supports a roller 216 above base 2 on the innerside but to the rear of the presser foot and thread cutolf 7. A thumbscrew 217 extends through side arm 215 and is in threaded engagementwith base 2 permitting the adjustment of the position of said arm.

Cylinder 9 has the piston rod thereof connected to the conventionalpresser foot lifting mechanism, generally indicated in FIG. 1 in dottedlines at 218, of the sewing machine 1 and is thereby connected to rod 8for raising said rod 8 and thereby the presser foot and thread cutoflf 7when said cylinder is activated.

In the operation of the present system screws 65 to 65c inclusive areadjusted to move each ball 74 from its ring 73 to permit the correctamount of air to pass therethrough and this adjustment can be changedwhen found necessary.

The clutch and brake unit has driven shaft 150 continuously rotatingwhen motor 16 connected thereto is energized when switch 26a is closed.

When compressed air from switching unit 18 passes through tube 21,piston 119 as shown in 'FIG. 2 moves projection 120 against the outerrace of ball bearing 125 moving sleeve 128 to the right of FIG. 2 andflange 139 against disc 140 braking the rotation of driven shaft 130,stopping the sewing machine.

However, when the switching unit 18 directs the compressed air to tube20, piston 134 is moved to the left of FIG. 2 against the outer race ofball bearing 125 moving sleeve 128 and flange 139 to the left againstdisc 141 which is rotating with block 142 keyed to shaft 145 beingrotated by shaft 150, causing shaft 129 and 130 to rotate therewithdriving the sewing machine.

The space between flange 139 and disc 140 and 141 is very small so thatthe transistion from brake to clutch engagement is very quickly carriedout. Sleeve 128 has a grooved bore into which the splines on splinedshaft 129 are slideably positioned permitting sleeve 128 to slidelongitudinally of shaft 129 for rotating therewith.

The housing of motor 16 and the clutch and brake unit 15 are joined withthe motor drive shaft being shaft or fixedly connected thereto. However,it is to be appreciated that other driving means such as internalcombustion engines or the like can be used for driving shaft 150 orconnected thereto by any conventional means. Clutch and brake unit 15can equally as well be used in other applications besides that ofoperating a sewing machine as described herein.

When switch 26a in lines 26 is closed it sends an electrical current tomotor 16 for operating the same. At such time if switch 30 is closed itactivates signal 45 and solenoid 35 closing port 60a thereof and openingport 190 to port 5% allowing compressed air from tube 19 to pass to tube59, openings 59a, 105 and 104, tube 57, solenoid 38, opening 92, 96,recess 109, openings 84 and 83 and tubes 21 and 23 stopping the sewingmachine and raising the presser foot 7, and also to the tube 24 forguide plate 11.

When a work piece such as a shoe is presented for sewing it is caused bythe operator to press against plate 11 and beneath needle 6 for closingpassage 12 stopping the escape of air increasing the pressure thereofwhereupon the air enters openings 97 forcing piston 48 upwardly, closingmicro-switch 32 and completing the circuit to solenoids 38 and 39 whichchanges the air passing therethrough closing openings 57a and 58a andopening openings 91 and 89 of both solenoids. Thus tube 21 is exhaustedthrough solenoid 38 to tube 113 and air asses from opening 89 to 90 ofsolenoid 39 to tube 20 closing the clutch and operating the sewingmachine and also to ports 178 and 176 of solenoid 172 pushing down thepiston in the cut-oif cylinder raising the thread retainer and threadpick-up in the presser foot and thread cut-off 7, and 177 of solenoid173 to cylinder 9 raising the piston therein thus lowering the presserfoot and thread cut-oft 7 onto the work piece.

When switches 26a and 30 are closed placing ports 19a and 59a ofsolenoid 35 in communication and closing port 60a thereof compressed airtherefrom passes through normally open ports 57a and 92 of solenoid 38to tube 21 stopping the sewing machine and to the tube 23 raising thefoot lift piston in cylinder 9 and also raising the piston in thecut-otf cylinder 189. This raises the preser foot and thread cut-off aswell as lowering the thread retainer and thread pickup in the saidpresser foot and thread cut-off. The sewing thread beneath the threadretainer and thread pick-up is guided by the ends of these elements toand between the same until the sewing thread extends through slots 197ain the thread pick-up as shown in FIG. 15.

Upon micro-switch 32 being closed port 57a of solenoid 38 is closed andport 91 opened exhausting said solenoid, tube 21 and the piston raisingsides of said foot lift cylinder 9 and said cut-off cylinder 189 andreleasing the brake. At the same time, port 58a of solenoid 39 is closedand port 89 thereof opened directing the air to tube 20 closing theclutch for operating the sewing machine, to the needle cooler tube 25,to ports 179 and 177 of solenoid 173 for moving the piston in cylinder 9downwardly lowering presser foot and thread cut-otf 7 and also to port178 of solenoid 172 and through port 176 thereof to the down positioningside of the cut-off cylinder 189 raising the thread retainer and threadpickup of presser foot and thread cut-off 7 cutting the sewing thread.

At any time that the knee control micro-switch is activated ports 178and 179 of solenoids 172 and 173' respectively are closed and port 174of solenoid 172 opened.

Thus if micro-switch 32 is closed when a shoe piece is against the frontguide 11 and the sewing machine is operating due to port 89 and 90 ofsolenoid 39 being opened and said knee operated micro-switch 185 isactivated, ports 178 and 179 of solenoid 172 and 173 are closed whileport 174 of solenoid 172 is opened without efiecting the piston in thecut-01f cylinder 189.

However, if micro-switch 32 is not closed and air is passing throughport 92 of solenoid 38 and the tube 21 stopping the operation of thesewing machine and then the knee operated micro-switch 185 is closed,air passes to port 176 and 174 of solenoid 172 and both sides of thepiston of the cut-off cylinder 189 so that there is no change in thethread retainer and thread pickup of the presser foot and thread cut-offand also to tube 23 to the up piston positioning side of cylinder 9raising presser foot and thread cut-01f 7.

Of course, opening the knee control micro-switch 185 again denergizessolenoids 172 and 173 returning the system to its normally operatingcondition.

The present apparatus can be also employed by using tubing as asubstitute for the passageways of the switching unit 18.

The present apparatus is capable of considerable modifications and suchchanges thereto as come within the scope of the appended claims isdeemed a part thereof.

We claim:

1. In a sewing machine, a presser foot and thread cutoff comprising arod having a presser foot extending therefrom, said presser footincluding a slot, a cutting blade fixedly mounted in the body of saidpresser foot and extending across said slot, a thread retainer slideablypositioned in said slot for at times'selectively extending from saidbody, a thread pick-up slideably positioned in said slot for at timesselectively extending from said body along with and adjacent to, butspaced from said thread retainer and a control arm pivotally mounted tosaid thread retainer and said thread pick-up for raising and loweringsaid thread retainer and said thread pickup.

2. In a sewing machine, a presser foot and thread cut-off comprising apresser foot body having a side recess, a thread pick-up slideablypositioned in said recess and having a hook shaped end for picking upsewing thread, a 'thread retainer slideably positioned in said recessalongside said thread p'ick-up, but spaced from said hooked shaped endfor retaining the sewing thread thereon, said thread pick-up having aside slot, said thread retainer having a side slot, an arm pivotallymounted on said presser foot body and extending into said thread pick-upand thread retainer slot for pivotalconnection therewith, a threadcutting blade extending across said presser footbody recess for cuttingthread carried by said thread pick-up and a plate fastened to saidpresser foot body enclosing said recess.

References Cited UNITED STATES PATENTS 2,229,991 1/1941 Sauer ll2-2522,487,389 11/1949 Smith et a1 1l2252 2,558,353 6/1951 Garcia L 1l22523,330,236 7/1967 Ormeaux et al 112-252 JORDAN FRANKLIN, PrimaryExaminer.

H. HAMPTON HUNTER, Assistant Examiner.

